Comparison : Item # SF12MM, SF / UCF 4-Bolt Flange Units
Item # SF8, SF / UCF 4-Bolt Flange Units
Item # SF15MM, SF / UCF 4-Bolt Flange Units
Item # SF10, SF / UCF 4-Bolt Flange Units
Item # SF17MM, SF / UCF 4-Bolt Flange Units